joseph mtzpatrick



J. FITZPATRICK.

NUT LOCK.

APPLICATION FILED MAR. I, 1919.

amawtoz W1; messes cffz'izpazrz'c/i .ifflim 35% 5 I I fitter/negn IIAPLANOnlAPII co WA Patented Sept. 2, 1919.

UNITED m r r r -A Erossmmzrrmaim, I f

nuances.

Application filed. March 1, 1919. Serial No. 279,995.

To all whom it may concern:

Be it known that I, J osnPH FrrzrArmon, a citizen of the United States,residing at San Antonio, in the countyof BeXar and State of Texas, haveinvented new and useful Improvements in Nut-Locks, of which thefollowing is a specification.

This invention relates to nut locks and it consists in the novelfeatures hereinafter described and claimed.

An object of the invention is to produce a comparatively simple andinexpensive nut in which the nut may be readily applied to and removedfrom a bolt, one wherein the nut will be securely locked in appliedposition upon the bolt, and one in which the nut may be quickly andeasily removed from the bolt.

A further object of the invention is to produce a nut lock in which whenthe nut is once in place it will be absolutely impossible for the sameto work loose, as from jars or vibrations incident to use, and in whichits removal, when desired, may be efiected in an easy and ready manner,to provide a nut lock which, while being certain and effective in use,will be exceedingly simple of construction, easy to repair in case ofinjury, cheap to produce and of ready adaptation to position for use.

In the accompanying drawing Figure 1 is a side view of a bolt and thenut with parts in section showingthe lock applied.

Fig. 2 is an end view, parts being broken away and parts being insection.

Fig. 3 is a perspective view of the nut.

Fig. 4 is an elevation of the pin.

Fig. 5 is a plan view of the plate.

As illustrated in the accompanying drawing the bolt 1 is of usual formand is provided at its side and at a point between the ends of itsthread with a socket 2. The nut 3 is adapted to be screwed upon thethread of the bolt 1 in a usual manner. The nut 3 is provided at oneside with anaperture 4c and a groove 5 is provided at the edge of thenut and extends transversely across the outer end of the aperture 1. Theedges of the groove 5 are undercut. A plate 6 is adapted to slide in thegroove 5 and the plate is provided at its underside with a socket 7. Apin 8 ismovably mounted in the aperture 4 and the lower end of the pin 8is adapted to enter the socket 2 when the aperture a surroundsthe saidsocket. The pin 8 is provided at is outer end with a cone shaped head 9,the outer portion of which is adapted to enter the socket 7 of the plate6 Whenthe plate is inserted in the groove 5. A spring 10 is interposedbetween the head 9 and the bolt 1 and is under tension with a tendencyto maintain the outer portion of the head 9 in the socket 7 as bestillustrated in Fig. 1 of the drawing.

It will be observed that the parts as illusrated in Fig.1 of the drawingprovide an eifective' nut lock inasmuch as the nut 3 is restrainedagainst turning movement upon the bolt 1. When it is desired to removethe nut 3 from the bolt the plate 6 is moved longitudinally whereby anedge of the socket 7 moves over the pointed end portion of the head 9and slightly depresses the pin 8 against the tension of the spring 10.Thus the pointed end of the head 9 is moved below the edge of the socket7 and the plate 6 may be removed from the groove 5. The pin 8 may thenbe lifted out of the aperture 4. and consequently the nut 3 is free torotate upon the threaded portion of the bolt 1. v To assemble the partsof the nut lock in operation above described is re versed.

Fromthe foregoing description taken in conjunction with the accompanyingdrawing, it will be seen that a nut lock of simas for instance the nutsand axles of automobile machines, wagons or vehicles of any kind. Thenuts and the locking device may be of any desired size and shape andthey may be composed of .material suitably adapted for the purposesintended.

Having described the invention what is claimed is 2- In combination witha bolt provided at its sides with a socket, a nut engaging the enter thesocket in the bolt, said pin havbolt and provided With an aperture, saiding a cone shaped head and a spring internut having a groove extendingtransversely posed between the head of the pin and the 10 across theaperture, a plate slidably mountside of the bolt.

ed in the groove and provided at its under- In testimony whereof I aflixmy signature.

side With a s0cket,a pin movably mounted in the aperture of the nut andadapted to JOSEPH FITZPATRICK.

copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents.

Washington, D. c."

